C1311213331333132332133313331333133313331333131333133313132123311   >>    C131121333133313233213331333133313331333133313133313331313212331   <<    C1311213331333132332133313331333133313331333131333133313132123313   >>      C1311213331333132332133313331333133313331333131333133313132123312   >>